Blue-print frame.



N0. 830,269. PATENTED SEPT. 4, 1906. M. S. WHIPKEY.

BLUE PRINT FRAME.

APPLICATION FILED 00T.2, 1905.

alt/P l j 1H: Nolmfs rrrrns co., wAsnmcwu, o. c.

PATENT oEEIoE.

MILTON S. IVI-IIPKEY, OF BARRONVALE, PENNSYLVANIA.

BLUE-PRINT FRAME.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed October 2, 1905. Serial No. 281,009.

T0 n/ZZ 'mD/nm, it 727,01/ cm2/cern:

Be it known that I, MILTON S. VIIIPKEY, a citizen of the United States of America, residing at Barrenvale, in the county of Somerset and State of Pennsylvania, have invented certain new and useful Improvements in Blue-Print Frames, of which the following is a speci'lication, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in blue-print frames, and. more particularly to that type of frame employed for malLng a blue-print by sunlight.

My invention aims to provide a novel form of frame wherein a housing or casing is provided the sensitized paper employed for producing blue-prints from a drawing or tracing. By providing such housing I greatly facilitate the work in connection with making blue-prints by always having the sensitized paper convenient to the frame and preventing the waste of paper that is o'l'ten caused by cutting the sheets too large for the lframe and draudng. In this connection I have provided a frame which can be readily usedl by photographers, photolithogra-pliers, architects, draftsmen, and the like artists for copying drawings and tracings, the frame being constructed to be used in connection with the sunlight for reproducing drawings and tracings. To this end I have constructed a frame having two hinged members which can be locked together to operate as one piece or may be operated independently7 of one another. One of the members, together with the frame proper, forms a housing or casing for sensitized paper, while the other hinged member forms a backing and support 'for the drawing and. sensi ized paper while the drawing is being reproduced.

The above construction will be hereinafter more fully described and then specificallyT pointed out in the claims, and, referring to the drawings accompanying this application, like numerals of reference designate corresponding parts throughout the several views, :in which- Figure 1 is a plan view of my improved frame in an open position. Fig. 2 is a plan view of the same in a closed position. Fig. 3

proper by the frame 12.

is a sectional view on the line .r :It of Fig. 2. Fig. 4 is a similar view on the line 'y f z/ of FIO'. 2, and Figs. 5 and 6 are detail views of a novel form of clasp used in connection with the frame.

My improved blue-printing frame is preferably constructed of wood, and the frame proper consists of a rectangular structure 1, the one edge 2 of which is provided with a semicylindrical re ess 3. The structure l at the ends of the recess 3 is provided with sem'icylindrical sockets 4 1l, in which rests a rod 5, the object of which will be presently described. The structure 1 is provided with a transparent plate 6, preferably of glass.

I'Iinged to the edge 2 of the frame proper is a member 7, and hinged to this member, at S, is a member or lid 9. In the member 7 is formed a semicylindrical recess 10, similar to there/cess 3, heretofore mentioned. The ends of the recess are provided with sockets 11 11, and when the member 7 is closed upon the frame proper the recesses 3 and 10 form a cylindrical housing for a roll of sensitizef paper, and the rod 5 is used to position the roll within this housing or casing. The rod is preferably placed through the roll, whereby after the paper has been used number of times the roll will be ournaled in the center of the housing or casing, and thereby prevented from being injured contacting with the sides of the housing or casing.

The member or lid 9 isA substantially rectangular and is adapted to lit snugly over the frame proper, especially the transparent plate 6. The lid or member 9 consists of a rectangular frame 12, having a center rib or partition 14. The frame 12 is provided upon its one side with a plate 15, which is covered with felt or the like fabric 16, this felt or fabric serving as a cushion to relieve any sudden pressure that may be exerted upon the frame The underneath face of the member 7 adiacent to the lid or member 9 is cut away, as at 17, to form a slot through which the sensitized paper is pulled when it is desired to print a drawing or tracing in the frame.

In Figs. 5 and 6 of the drawings I have illustrated a novel form of clasp which is applicable to my improved blue-printing frame for holding the diiierent members in a closed IOO position while the frame is being used. The clasp consists of ,a hook-shaped piece of metal 18, the one end of which is adapted to be pivotally connected to the printing-frame, while the hook-shaped end is provided with a knob 19 in order that it may be easily manipulated. Clasps corresponding to those shown in Fig. 5 are placed upon the sides of the frame proper, near the front and lrear edges thereof, and these clasps are adapted to engage headed pins 21, carried by the members'7 and 9.

In practice it is only necessary to place the drawing or tracting to be printed upon the transparent plate 6, at which time the sensitized ypaper contained within the housing or casing of the blue-printing frame is pulled outwardly across the drawing or tracing to be printed, and then the member or lid 9 is closed upon the paper to form a light-proof or dark background for the sensitized paper. The member or lid 9 is then locked in engagement with the frame proper by placing the 4 clasps 18 in engagement with the headed pins 21, carried by the member or lid. The frame is then reversed and exposed to the sunlight, and the action of the sun through the glass plate upon the sensitized paper will so affect the same as to cause it to receive an impression or reproduction of the drawing or tracing contained within the frame, and when the sensitized paper is thoroughly washed a perfect production of the drawing or tracing contained within the frame will be had.

When the frame is being used, it is only necessary to withdraw the necessary quantity of paper from the housing or casing as will be needed, the remainder of the paper being protected in a rolled form within the housing or casing. In this manner a considerable quantity of paper is saved by not being exposed to the sunlight and by not being used in larger quantities than is actually necessary for producing a drawing or tracing contained within the blue-printing frame.

I claim- 1. In a blue-print frame, the combination of a frame, two members hinged together and to said frame, a transparent plate carried by said frame, said frame having a recess formed therein, one of said members having a recess formed therein adapted to form together with the recess of said frame a housing for sensitized paper, the other member consisting of a frame, a plate and a cushion, and means to lock said members in engagement with said first-named frame, substantially as described.

2. The combination of a frame, a transarent plate carried by said frame, two memlders hinged together, one of said members being hinged to said frame, said Jframe having a recess formed therein adjacent to its hinged edge, one of said members having a recess formed therein adapted to aline with the first-named recess when said member is closed upon said Jframe, the other member embodying a frame, a plate carried by said last-named frame, and a cushion carried by said plate, and means to independently lock each member to said first-named frame, substantially as described.

3. The combination of a frame, a transparent plate carried by said frame, two members hinged together, one member being hinged to said frame, means to house sensitized paper between said frame and one of said members, and means to separately 'lock each member in engagement with said frame,

substantially as described.

In testimony whereof I affix my signature in the presence of two witnesses.

MILTON S. WHIPKEY. 

